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# Pico Audio | ||
The audio solution dedicated to the TinyPICO. | ||
## About | ||
The Pico Audio is a fully featured audio solution specially made for the TinyPICO ESP32 development board. The Pico Audio features an I2S Stereo DAC, I2S Mono MEMS Microphone and a builtin 3.7W Stereo Amplifier. | ||
The Pico Audio utilises a low power NXP UDA1334A IC featuring a clear digital 16/20/24 bit, 44.1kHz, stereo audio DAC. Accompanying the DAC is a Knowles SPH0645 I2S digital mono microphone. This miniature low power MEMS microphone provides a low noise, 24 bit, 44.1kHz stream. Complimenting the DAC is the powerful Maxim MAX98306 3.7W stereo class D amplifier. | ||
The Pico Audio has a mounting socket to host the TinyPICO development board and connects all of these great features together in a seamless and easy to utilise footprint measuring a tiny 32 mm x 47 mm (1.2in x 1.86in). | ||
## PCB Layout | ||
 | ||
 | ||
## Features | ||
The software and hardware used in this project has been made possible by the principle of open hardware and software. Many of the samples have been collected together from a variety of authors and edited to work out of the box with the Pico Audio for instructional purposes. Please consult each sample project for relevant license and credit. | ||
## Features | ||
* TinyPICO Compatible | ||
* Simply plug your TinyPICO board into the Pico Audio and your ready to go | ||
* UDA1334A Stereo DAC | ||
* Low power audio DAC | ||
* Integrated digital filter and switchable digital de-emphasis for 44.1 kHz frequency | ||
* Supports samples from 16 to 100 kHz | ||
* Simple I2S interface | ||
* 16/20/24 bit audio | ||
* High linearity, wide dynamic range and low distortion | ||
* MAX98306 Stereo Amplifier | ||
* Low power efficient operation | ||
* 3.7W @ 3Ohm, 10% THD / 1.7W at 8Ohm, 10% THD | ||
* Spread Spectrum Modulation | ||
* Five selectable gain levels | ||
* Excellent click and pop suppression | ||
* SPH0645LM4H MEMS Microphone | ||
* Low power design | ||
* Simple I2S interface | ||
* Flat frequency response | ||
* 24 bit, 44.1kHz audio | ||
* High SNR of 65dB(A) | ||
* RF shielded | ||
* Omnidirectional | ||
## Sample Projects Modified for Pico Audio | ||
* Stream net radio stations with MP3 support | ||
* Play audio from SD card with MP3 support | ||
* Simple Amazon Alexa | ||
* Record audio to SD card |
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